Our verdict
Pick the Coway Airmega 250 if it is the cheaper of the two on the day you buy. Pick the Coway Airmega Mighty2 if your room is larger and running cost matters.
The central trade-off
Rated room size. Coway Airmega Mighty2: 1,800 sq ft; Coway Airmega 250: 930 sq ft.
Power draw. Coway Airmega Mighty2: 56 W; Coway Airmega 250: 64 W.
Filters. Coway Airmega 250: HEPA.
Price. When we checked, the Coway Airmega Mighty2 listed for less ($270 against $399); prices move, so check both buttons.
Side by side
| Specification | Coway Airmega 250 | Coway Airmega Mighty2 |
|---|---|---|
| Rated room size | 930 sq ft | 1,800 sq ft |
| Smoke CADR | Not stated by the maker | Not stated by the maker |
| CADR | Not stated by the maker | Not stated by the maker |
| Quietest setting | Not stated by the maker | Not stated by the maker |
| Noise | 22 dB | 19 dB |
| Power draw | 64 W | 56 W |
| Filters | HEPA | Not stated by the maker |
| Warranty | Not stated by the maker | Not stated by the maker |
Values are the makers' published specifications. "Not stated" means the maker doesn't publish it.